DIY Limestone Caves

DIY Limestone Caves

Most stone is made over millions of years, cooked in the core of our planet. That stone then erodes over time due to wind, acids found in rain and groundwater, and other natural weatherings. Chalk is a type of limestone formed by the shells of microscopic marine organisms. The process of erosion can produce beautiful

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Why do Astronauts Float?

Why do Astronauts Float?

 Did you know that astronauts on the International Space Station (ISS) experience about 90% of the gravitational acceleration that we feel on Earth’s surface? That might seem strange, especially since when we look at them, they are always floating around. While this makes it tempting to say that there is no gravity in space,

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How Could We Have Oceans of Acid?

How Could We Have Oceans of Acid?

As far as we can tell, the ocean has been slightly basic for hundreds of millions of years. However, that seems to be changing, and the culprit may surprise you. Everyone has heard of carbon dioxide. It’s the thing we breathe out, what plants crave, and there’s this thing called the greenhouse effect which you’ve

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Chemistry on Valentine’s Day!

Chemistry on Valentine’s Day!

Puns abound in our Valentine’s day video, but we’re not about to let a holiday get in the way of talking about cool science! These cool color changes are brought about by chemistry, specifically by a little number known as pH. While it is pretty common knowledge that this number indicates how acidic something is,

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